CVE-2023-34433

Name: CVE-2023-34433
Creator: NVD / NIST
Published: 2023-07-07T00:15:09.76+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 0.33%

Last modified Jun 17, 2026

CVE-2023-34433 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. PiiGAB M-Bus stores passwords using a weak hash algorithm. . EPSS estimates a 0.33% chance of exploitation in the next 30 days.

Description

PiiGAB M-Bus stores passwords using a weak hash algorithm.

Metrics

CVSS 3.1

9.8/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

0.33%

24.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-916

Affected Software

Vendor	Product	Versions
Piigab	M-Bus 900s Firmware	All versions

References

https://www.cisa.gov/news-events/ics-advisories/icsa-23-187-01Third Party Advisory, US Government Resource
https://www.cisa.gov/news-events/ics-advisories/icsa-23-187-01Third Party Advisory, US Government Resource

Timeline

Published: Jul 7, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2023-34433?

PiiGAB M-Bus stores passwords using a weak hash algorithm.

How severe is CVE-2023-34433?

CVE-2023-34433 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 0.33% probability of exploitation in the next 30 days.

How do I fix CVE-2023-34433?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2023-34433?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST